1) 7х + 99 = 148
7х = 148 - 997х = 49x = 49 / 7x = 7
2) 14 - 3х = 5
-3х = 5 - 14-3х = -9x = -9 / -3x = 3
Ответ: x = 7 и x = 3
1) 7х + 99 = 148
7х = 148 - 99
7х = 49
x = 49 / 7
x = 7
2) 14 - 3х = 5
-3х = 5 - 14
-3х = -9
x = -9 / -3
x = 3
Ответ: x = 7 и x = 3